I'm not sure mine has it. I filled it recently, and hit the 62-63 mile mark today driving home from work. It was 39.1 and didn't change much, no more than a few 10ths. It did rise to low40's soon after, but not until well past the 64 mile mark. I was in the high 40's by mile 68, but I had also gotten off 1-95 by then and was driving on secondary roads.The terrain here is rolling hills. I doubt my car has the bug, just because I saw no significant change. That and because what my trip meter read for mileage and what I calculate when I fill the tank are very close.